Oops sorry! I had forgotten that I had the last question here. That is partially correct Busybee, but I had said on her mother's side, which doesn't mean it had to be traced through only females. So you have 2 out of the 3 great-grandparents. I need one more grandfather.

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'You?' cried Frodo.
'Yes, I, Gandalf the Grey,' said the wizard solemnly. 'There are many powers in the world, for good or for evil. Some are greater than I am. Against some I have not yet been measured. But my time is coming.'

Oops... my mistake, you asked for greatgrandfathers. In that case zacattack has already answered your question correctly, I believe.

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'You?' cried Frodo.
'Yes, I, Gandalf the Grey,' said the wizard solemnly. 'There are many powers in the world, for good or for evil. Some are greater than I am. Against some I have not yet been measured. But my time is coming.'

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“Sylphs of the forest,” I whispered. “Spirits of oak, beech and ash. Dryads of Rowan and hazel, hear us. You who have guided and guarded our every footstep, you who have sheltered our growth, we honour you." the Forbidden Link

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“Sylphs of the forest,” I whispered. “Spirits of oak, beech and ash. Dryads of Rowan and hazel, hear us. You who have guided and guarded our every footstep, you who have sheltered our growth, we honour you." the Forbidden Link

There are lots of possibilities, in fact 4, although the only named one I could find is Hareth

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“Sylphs of the forest,” I whispered. “Spirits of oak, beech and ash. Dryads of Rowan and hazel, hear us. You who have guided and guarded our every footstep, you who have sheltered our growth, we honour you." the Forbidden Link